Processes are diachronic, and the nature of their existence as extended in time is sometimes contrasted with that of events (instantaneous) or even objects (see endurance/perdurance).
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。